APPLICATIONSBxxxxLSLD-xW Series are specially designed for applications where a
single power supply is highly isolated from theinput power supply in a distributed power supply system on a
circuit board.These products apply to

1, Where the power supply system distribution , the digital circuit
isolation and voltage conversion2, Where the security equipment, broadcasting equipment, power
supply, isolation and voltage conversion3, Where the voltage of the input power supply is fixed (voltage
variation ≤±10%)4, Where isolation is necessary between input and output (isolation
voltage ≤1000VDC);5, Where the regulation of the output voltage and the output ripple
and noise are demanded.

APPLICATION NOTE① Requirement on output loadTo ensure this module can operate efficiently and reliably, During
operation, theminimum output load could not be less than 10% of the full load. If
the actual outputpower is very small, please connect a resistor with proper
resistance at the output end inparallel to increase the load, or use our company’s products with a
lower rated outputpower (IB_LD -W25IB_LS-W25 series).② Recommended testing and application circuitIf you want to further decrease the inputoutput ripple, an “LC”
filtering network may beconnected to the input and output ends of the DCDC converter, see
(Figure 1)It should also be noted that the inductance and the frequency of
the “LC” filteringnetwork should be staggered with the DCDC frequency to avoid mutual
interference.However, the capacitance of the output filter capacitor must be
proper. If the capacitanceis too big, a startup problem might arise. For every channel of
output, provided the safeand reliable operation is ensured, the greatest capacitance of its
filter capacitor sees③ Overload ProtectionUnder normal operating conditions, the output circuit of these
products has noprotection against over-current. The simplest method is to connect
a self-recovery fuse inseries at the input end or add a circuit breaker to the
circuit.(Figure 2)④ Input Over-voltage Protection CircuitThe simplest device for input over-voltage protection is a linear
voltage regulator withoverheat protection that is connected to the input end in series .⑤ No parallel connection or plug and play

NOTE:1, All products' layout dimensions are use"mm" and "inch" as the
unit, within "[]" are all inches;2, "NC" pin must not be connected to any external circuit, or it
will damage the product itself;3, All specifications measured at Ta=25°C, humidity<75%, nominal
input voltage and rated output load unless otherwise specified.4, In this datasheet, all the test methods of indications are based
on corporate standards.